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Page 1 of 1 <br />Dudash, Joe <br />From: Dudash, Joe <br />Sent: Tuesday, August 14, 2007 10:43 AM <br />To: 'jestover@bresnan.net' <br />Subject: RE: TR-48 Hubbard Creek Shaft <br />From what I understand, the Division needs a generic mud pit design that deals with the relevant sections of Rule <br />4.05.9 and that the design has to be formally put into the permit application. <br />The generic mud pit design now in Exhibit 8 of Volume III contains information relevant to Rule 4.05.9, including a <br />discussion of the 25 year event and the storage capacity of the mud pit. The designs and discussion were <br />formally put into the permit and relate to mud pits that range in size from 500 to 2000 square feet. <br />I didn't think you needed to change the existing generic mud pit design, just add another certified design into the <br />permit that takes into account Rule 4.05.9 and the larger size and volume of the Hubbard Creek mud pit. It seems <br />to me that a normal impoundment certification is not really a design since it is after the fact and it does not take <br />into account hydrology designs that one would find in Exhibit 8 of Volume III. <br />From: Jim Stover [mailto:jestover@bresnan.net] <br />Sent: Tuesday, August 14, 2007 6:53 AM <br />To: Dudash, Joe <br />Subject: TR-48 Hubbard Creek Shaft <br />Joe: <br />Thanks for your quick response on the referenced revision. My thought on the large mud pit is to certify and <br />inspect it like any other impoundment and not change the generic mud pit design. It is a dugout pond which helps <br />with one of the rules. Does that sound okay to you? <br />Jim Stover <br />J. E. Stover & Associates, Inc. <br />P.O. Box 60340 <br />Grand Junction, CO 81506 <br />970-245-4101 <br />8/17/2007